package com.changgou.file.controller;

import com.changgou.common.entity.Result;
import com.changgou.common.entity.StatusCode;
import com.changgou.file.pojo.FastDFSFile;
import com.changgou.file.util.FastDFSClient;
import org.apache.commons.lang.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;

@RestController
@RequestMapping("/file")
public class FileController {

    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file){
        try {
            //判断文件是否存在
            if(file==null){
                throw new RuntimeException( "文件不存在" );
            }
            //获取文件完整名称
            String originalFilename=file.getOriginalFilename();
            if(StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException( "文件不存在" );
            }

            //获取文件的扩展名称  a.jpg -> jpg
            String extName = originalFilename.substring( originalFilename.lastIndexOf( "." )+1 );

            //获取文件内容
            byte[] content = file.getBytes();

            //创建文件上传的封装实体类
            FastDFSFile fastDFSFile = new FastDFSFile( originalFilename,content,extName );

            //通过文件上传工具类进行上传，并获取返回参数String[]
            String[] uploadResult = FastDFSClient.upload( fastDFSFile );

            //封装返回结果
            String url = FastDFSClient.getTrackerUrl()+uploadResult[0]+"/"+uploadResult[1];
            System.out.println(FastDFSClient.getTrackerUrl());//http://192.168.200.128:8080/
            System.out.println(uploadResult[0]);//group1
            System.out.println(uploadResult[1]);//M00/00/00/wKjIgF37Go2AXkyOAAB6Dg-1x4Y701.jpg
            return new Result( true, StatusCode.OK,"文件上传成功",url );
        } catch (IOException e) {
            e.printStackTrace();
            return new Result( false,StatusCode.ERROR,"文件上传失败" );
        }

    }
}
